Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and links to their rpeorts go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 3468
interventional 3150
Observational 284
Registry 34

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 1711
Biological 274
Biological|Drug 223
Drug|Other 115
Drug|Procedure 90
Biological|Drug|Other 84
Biological|Drug|Procedure|Radiation 68
Drug|Radiation 65
Biological|Drug|Procedure 54
Other 46
Biological|Drug|Radiation 41
Drug|placebo 41
Drug|Procedure|Radiation 40
Biological|Other 30
Procedure 30
Drug|Other|Procedure|Radiation 17
Radiation 17
Biological|Drug|Other|Procedure|Radiation 16
Drug|Other|Procedure 14
Biological|Drug|Other|Procedure 10
Behavioral 9
Biological|Other|Procedure 9
Biological|Procedure 8
Device 8
Dietary Supplement|Drug 8
Drug|Genetic 8
Biological|Radiation 7
Combination Product 5
Genetic 5
Biological|Drug|Genetic 4
Biological|Drug|Genetic|Other|Procedure 4
Biological|Drug|Other|Radiation 4
Device|Drug 4
Drug|Genetic|Other 4
Drug|Other|Radiation 4
Other|Procedure 4
Biological|Device|Drug 3
Biological|Drug|Genetic|Other 3
Biological|Procedure|Radiation 3
Combination Product|Drug 3
Dietary Supplement 3
Dietary Supplement|Other 3
Drug|Genetic|Other|Procedure|Radiation 3
Behavioral|Drug 2
Behavioral|Other 2
Biological|Drug|placebo 2
Biological|Other|placebo 2
Biological|Other|Radiation 2
Biological|placebo 2
Device|Drug|Procedure 2
Device|Other 2
Diagnostic Test 2
Diagnostic Test|Drug|Procedure 2
Drug|Other|placebo|Procedure 2
Genetic|Procedure 2
Other|Radiation 2
Procedure|Radiation 2
Behavioral|Dietary Supplement|Other|Procedure 1
Biological|Device|Drug|Other|Procedure 1
Biological|Device|Drug|Procedure|Radiation 1
Biological|Dietary Supplement|Drug|Other|placebo 1
Biological|Dietary Supplement|Drug|placebo 1
Biological|Dietary Supplement|placebo 1
Biological|Drug|Other|placebo 1
Biological|Genetic|Other 1
Biological|Genetic|Other|Procedure 1
Combination Product|Drug|placebo 1
Device|Drug|Procedure|Radiation 1
Device|Procedure 1
Diagnostic Test|Drug|Genetic|Procedure|Radiation 1
Dietary Supplement|Drug|Other 1
Dietary Supplement|Other|placebo 1
Drug|Genetic|Other|Procedure 1
Drug|Genetic|Procedure 1
Drug|Genetic|Procedure|Radiation 1
Drug|Other|placebo 1
Drug|placebo|Procedure 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 1682
China 235
NA 88
France 76
Germany 66
United States|Canada 55
Korea, Republic of 53
Italy 52
Japan 51
United Kingdom 46
Canada 41
Spain 28
Belgium|France 19
United States|Puerto Rico 18
Switzerland 15
Australia 13
United States|United Kingdom 13
Israel 12
Taiwan 12
United States|Australia|Canada 12
United States|France 11
Russian Federation 10
Austria 7
Singapore 7
United States|Australia 7
United States|Germany 7
United States|Italy 7
Netherlands 6
Norway 6
United States|Germany|Italy 6
Denmark 5
Denmark|Finland|Norway|Sweden 5
France|United Kingdom 5
Germany|Switzerland 4
Hong Kong 4
Poland 4
United States|Canada|Puerto Rico 4
United States|France|United Kingdom 4
United States|Spain 4
France|Germany 3
India 3
Italy|Switzerland 3
Japan|Korea, Republic of 3
Thailand 3
United States|Australia|Canada|Puerto Rico|Switzerland 3
United States|Canada|France|Netherlands 3
United States|France|Spain 3
United States|Israel 3
United States|Japan 3
Australia|United Kingdom 2
Belgium|France|Switzerland 2
Czech Republic 2
France|Italy 2
France|Italy|Switzerland 2
Germany|United Kingdom 2
Hungary 2
Mexico 2
Saudi Arabia 2
Sweden 2
United States|Australia|Austria|Belgium|France|Germany|Hungary|Italy|New Zealand|Spain|United Kingdom 2
United States|Australia|Belgium|Canada|China|Czechia|Ireland|Israel|Italy|New Zealand|Poland|Russian Federation|Spain|Turkey|Ukraine|United Kingdom 2
United States|Australia|Italy 2
United States|Belgium|Canada|Spain 2
United States|Denmark|Germany 2
United States|France|Germany 2
United States|France|Spain|United Kingdom 2
United States|Italy|Poland|Spain 2
United States|Italy|Spain|United Kingdom 2
United States|Korea, Republic of 2
United States|Netherlands 2
United States|Switzerland 2
Albania|Argentina|Australia|Bosnia and Herzegovina|Brazil|Bulgaria|Colombia|Croatia|Ecuador|Egypt|Finland|Germany|Greece|Israel|Italy|Mexico|Romania|Russian Federation|Slovakia|Slovenia|Spain|Sweden|Switzerland|Turkey 1
Albania|Argentina|Austria|Brazil|Bulgaria|Colombia|Ecuador|Egypt|France|Germany|Greece|Hungary|Italy|Lithuania|Norway|Romania|Russian Federation|Slovakia|Slovenia|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
Algeria|Argentina|Belgium|Brazil|Bulgaria|Canada|Colombia|Finland|France|Greece|Ireland|Israel|Italy|Netherlands|Peru|Poland|Portugal|Russian Federation|Saudi Arabia|Serbia|South Africa|Spain|Thailand|Turkey|Ukraine|United Kingdom|Venezuela 1
Argentina 1
Argentina|Australia|Austria|Brazil|Bulgaria|Colombia|France|Germany|Greece|Hungary|India|Ireland|Israel|Italy|Japan|Malaysia|Netherlands|Peru|Poland|Portugal|Romania|Russian Federation|South Africa|Spain|Ukraine|United Kingdom 1
Argentina|Australia|Belgium|Brazil|Colombia|Denmark|France|Netherlands|New Zealand|Peru|Spain|Thailand 1
Argentina|Australia|Brazil|Canada|Czech Republic|Denmark|Ecuador|Finland|France|Israel|Italy|Korea, Republic of|Mexico|Norway|Peru|Poland|Russian Federation|Slovakia|Spain|Sweden|Switzerland|United Kingdom 1
Argentina|Brazil|Colombia|India|Indonesia|Iran, Islamic Republic of|Malaysia|Mexico|Paraguay|Philippines|Russian Federation|South Africa 1
Australia|Austria|Belgium|Canada|Czech Republic|Denmark|France|Germany|Israel|New Zealand|Poland|Portugal|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
Australia|Austria|Belgium|Croatia|Czechia|France|Germany|Greece|Hungary|New Zealand|Poland|Russian Federation|Spain 1
Australia|Austria|Belgium|Czechia|Denmark|France|Germany|Ireland|Israel|Italy|Netherlands|New Zealand|Norway|Poland|Slovakia|Spain|Sweden|Switzerland|United Kingdom 1
Australia|Austria|Bosnia and Herzegovina|Brazil|Bulgaria|China|Croatia|Czech Republic|Estonia|Hong Kong|Israel|Latvia|Macedonia, The Former Yugoslav Republic of|Malaysia|Mexico|Peru|Romania|Russian Federation|Serbia|Slovakia|Slovenia|South Africa|Sweden|Taiwan|Thailand|Turkey 1
Australia|Belgium|Bosnia and Herzegovina|Brazil|Bulgaria|Canada|Colombia|Croatia|Denmark|Finland|France|Georgia|Germany|Greece|Italy|Macedonia, The Former Yugoslav Republic of|Malaysia|Mexico|New Zealand|Peru|Romania|Russian Federation|Serbia|Singapore|Slovakia|South Africa|Spain|Thailand|Turkey|United Kingdom 1
Australia|Belgium|Canada|Denmark|France|Germany|Italy|Korea, Republic of|Singapore|United Kingdom 1
Australia|Belgium|Canada|France|Germany|Italy|Portugal|Spain 1
Australia|Belgium|Denmark|Italy|Spain 1
Australia|Canada|France|Italy|Sweden|Switzerland 1
Australia|Canada|New Zealand 1
Australia|China|Malaysia|Taiwan 1
Australia|France|Germany|Hungary|Korea, Republic of|Poland|Singapore|United Kingdom 1
Australia|France|Germany|Italy|Spain|United Kingdom 1
Australia|France|Germany|Netherlands 1
Australia|France|Spain|United Kingdom 1
Australia|New Zealand 1
Australia|New Zealand|Poland|Russian Federation|Thailand 1
Australia|New Zealand|United Kingdom 1
Australia|United States|Belarus|Bulgaria|Canada|China|Czechia|France|Germany|Italy|Korea, Republic of|New Zealand|Poland|Russian Federation|Spain|Taiwan|United Kingdom 1
Austria|Belgium|China|Czechia|Denmark|Finland|Israel|France|Germany|Hungary|Ireland|Italy|Netherlands|Norway|Poland|Portugal|Russian Federation|Slovakia|Spain|Sweden|Switzerland 1
Austria|Belgium|Czechia|Denmark|Finland|Germany|Netherlands|Norway|Poland|Portugal|Sweden 1
Austria|Belgium|Finland|France|Germany|Italy|Japan|Netherlands|Spain|Switzerland|United Kingdom 1
Austria|Belgium|France|Germany|Israel|Netherlands|Poland|Portugal 1
Austria|Czechia|Denmark|Finland|Germany|Norway|Sweden|Switzerland 1
Austria|Denmark|Finland|Norway|Sweden|Switzerland 1
Austria|France|Germany|Switzerland 1
Austria|France|Norway 1
Austria|Germany 1
Austria|Germany|Greece|Italy|Switzerland 1
Austria|Germany|Israel|Italy|Switzerland|United Kingdom 1
Austria|Italy|Spain 1
Austria|Italy|Switzerland 1
Belgium 1
Belgium|Brazil|Canada|Chile|Colombia|Czechia|France|Germany|Hungary|Ireland|Korea, Republic of|Mexico|Netherlands|Poland|Portugal|Russian Federation|Spain|Sweden|Taiwan|Ukraine|United Kingdom 1
Belgium|Canada|China|France|Hungary|Italy|Netherlands|Poland|Spain|United Kingdom 1
Belgium|Croatia|Czech Republic|France|Germany|Italy|Netherlands|Portugal|Slovakia|Turkey 1
Belgium|Croatia|Czechia|Hungary|Poland|Portugal|Romania|Spain|Turkey|United Kingdom 1
Belgium|Croatia|Denmark|Egypt|Netherlands|Poland|Portugal|Slovakia|Spain 1
Belgium|Croatia|Denmark|France|Netherlands 1
Belgium|Croatia|Egypt|France|Netherlands 1
Belgium|Czechia|Denmark|France|Germany|Greece|Israel|Italy|Netherlands|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
Belgium|Denmark|Italy|Spain|United Kingdom 1
Belgium|Egypt|France|Netherlands|Portugal|Switzerland|United Kingdom 1
Belgium|France|Germany|Italy|Korea, Republic of|Portugal|Singapore|Spain 1
Belgium|France|Germany|Netherlands|Poland|Portugal|Spain 1
Belgium|France|Italy 1
Belgium|France|Italy|Portugal|Switzerland 1
Belgium|France|Italy|Spain|Switzerland|United Kingdom 1
Belgium|France|Netherlands 1
Belgium|France|United Kingdom 1
Belgium|Italy|Spain 1
Belgium|Lithuania|Spain 1
Belgium|Netherlands 1
Bosnia and Herzegovina|Croatia|Georgia|Moldova, Republic of|Poland|Serbia|Ukraine 1
Brazil|Bulgaria|China|Greece|Italy|Korea, Republic of|Poland|Portugal|Russian Federation|South Africa|Taiwan|Turkey 1
Brazil|Italy|North Macedonia|Serbia|Slovakia|South Africa|Switzerland 1
Canada|Italy|United Kingdom 1
Chile|Italy|Spain|Switzerland 1
China|Hong Kong|Korea, Republic of|Singapore|Taiwan 1
China|Korea, Republic of|Thailand 1
Colombia|India|Russian Federation|South Africa|Ukraine 1
Colombia|Mexico 1
Czech Republic|France|Germany|Italy|Netherlands|Poland|Sweden|Switzerland|United Kingdom 1
Czech Republic|Poland|Romania 1
Czechia|Germany|Malaysia|Poland|Spain|Thailand|Turkey 1
Czechia|Italy|Netherlands|United Kingdom 1
Czechia|Norway|Poland|United Kingdom 1
Denmark|Finland|Italy|Switzerland 1
Denmark|Finland|Netherlands|Norway|Sweden 1
Denmark|Finland|Norway 1
Denmark|France|Italy|Netherlands|Spain|United Kingdom 1
Denmark|Germany|Italy|Norway|Sweden 1
Denmark|Netherlands|Spain|United Kingdom 1
Denmark|Norway|Sweden 1
Denmark|Sweden 1
Egypt 1
Finland 1
France|Australia|Austria|Belgium|Israel|Poland|Portugal|Spain|Switzerland 1
France|Belgium 1
France|Belgium|Canada|Denmark|Germany|Italy|Netherlands|Norway|Portugal|Spain|Sweden|Switzerland|United Kingdom 1
France|Belgium|Switzerland 1
France|Germany|Hungary|Israel|Japan|United States|Argentina|Australia|Belgium|Brazil|Canada|China|Czechia|Denmark|Finland|Korea, Republic of|Mexico|Netherlands|Norway|Poland|Russian Federation|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
France|Germany|Korea, Republic of 1
France|Germany|Poland|Russian Federation|Belgium|United States|Australia|Spain|United Kingdom 1
France|Germany|Russian Federation 1
France|Italy|Japan|Spain 1
France|Italy|Korea, Republic of|Netherlands|Portugal|Spain|Taiwan 1
France|Italy|Netherlands 1
France|Italy|Peru|Puerto Rico|Spain|Switzerland 1
France|Italy|Spain|United Kingdom 1
France|Spain 1
France|United States|Australia|Poland|United Kingdom 1
France|United States|Canada|Germany|Spain|United Kingdom 1
France|United States|Germany|Italy 1
Germany|Israel 1
Germany|Israel|Italy 1
Germany|Italy|Spain 1
Germany|Italy|Switzerland 1
Germany|Italy|Switzerland|United Kingdom 1
Germany|Netherlands|United Kingdom 1
Hong Kong|Japan|Korea, Republic of|Taiwan 1
Hungary|Argentina|Australia|Austria|Brazil|Canada|Chile|Colombia|Croatia|Denmark|Dominican Republic|Egypt|El Salvador|Germany|Guatemala|Hong Kong|Indonesia|Italy|Korea, Republic of|Malaysia|Netherlands|New Zealand|Panama|Peru|Philippines|Portugal|Romania|Sweden|Taiwan|Thailand|Turkey|Vietnam 1
Ireland|United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Chile|China|Colombia|France|Germany|Greece|Hong Kong|Hungary|Italy|Japan|Korea, Republic of|Lithuania|Malaysia|Mexico|New Zealand|Philippines|Poland|Portugal|Romania|Russian Federation|Singapore|Slovakia|South Africa|Spain|Taiwan|Thailand|Turkey|Ukraine|Vietnam 1
Italy|Israel|United States|Australia|Austria|Belarus|Belgium|Brazil|Bulgaria|Canada|Chile|Czechia|Denmark|Egypt|France|Germany|Hungary|Mexico|Netherlands|New Zealand|Peru|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Slovakia|Spain|Sweden|Turkey|United Kingdom 1
Italy|Japan|United States|Australia|Bulgaria|Canada|Colombia|Czechia|France|Georgia|Germany|Greece|India|Israel|Korea, Republic of|Mexico|Poland|Romania|Spain|Ukraine 1
Italy|Poland|United Kingdom 1
Japan|United Kingdom 1
Japan|United States|Argentina|Austria|Belgium|China|Czech Republic|Denmark|Estonia|Finland|Germany|Greece|Hungary|India|Ireland|Israel|Korea, Republic of|Netherlands|Norway|Poland|Russian Federation|Singapore|Spain|Sweden|Thailand|United Kingdom 1
Kenya|Zimbabwe 1
Korea, Republic of|Malaysia|Singapore 1
Korea, Republic of|Singapore 1
Malawi 1
Netherlands|Australia|Belgium|Canada|Denmark|Egypt|France|Hungary|Italy|New Zealand|Norway|Poland|Portugal|Slovakia|Slovenia|South Africa|Sweden|United Kingdom 1
Netherlands|Belgium 1
Netherlands|United Kingdom 1
New Zealand 1
Norway|Sweden|Switzerland 1
Poland|United States|Australia|Belgium|Brazil|Canada|Czechia|Denmark|France|Hong Kong|Hungary|Italy|Japan|Korea, Republic of|Norway|Russian Federation|South Africa|Spain|Taiwan|Turkey|United Kingdom 1
Puerto Rico 1
Russian Federation|United States|Argentina|Australia|Belgium|Brazil|China|France|Germany|Israel|Japan|Korea, Republic of|Poland|Puerto Rico|Spain|Sweden|Turkey|Ukraine|United Kingdom 1
Serbia 1
Spain|France|Germany|Italy|Netherlands|Sweden|United Kingdom 1
Spain|Switzerland 1
Sweden|United Kingdom 1
Switzerland|Austria 1
Switzerland|United Kingdom 1
Taiwan|United Kingdom|United States|Poland|Spain 1
Turkey 1
Ukraine|United States|Argentina|Australia|Belgium|Brazil|Canada|China|Czechia|France|Germany|Greece|Hungary|Ireland|Israel|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Puerto Rico|Russian Federation|Slovakia|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
United Kingdom|Australia 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Chile|China|France|Germany|Italy|Netherlands|Poland|Spain|Sweden|Switzerland|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Canada|China|Colombia|Czechia|Egypt|France|Germany|Greece|Hong Kong|Hungary|Israel|Italy|Japan|Korea, Republic of|Lebanon|Mexico|New Zealand|Norway|Peru|Poland|Russian Federation|Saudi Arabia|Singapore|Slovakia|Spain|Switzerland|Thailand|Turkey|Venezuela 1
United States|Argentina|Australia|Belgium|Brazil|Canada|China|Colombia|Czechia|France|Germany|Greece|Hungary|Ireland|Israel|Italy|Korea, Republic of|Mexico|Netherlands|Poland|Portugal|Russian Federation|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|China|Cyprus|Czech Republic|Finland|France|Germany|Greece|Hungary|India|Israel|Italy|Korea, Republic of|Mexico|New Zealand|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Slovakia|South Africa|Spain|Sweden|Thailand|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|China|Czechia|France|Germany|Greece|Hong Kong|Hungary|Israel|Italy|Japan|Korea, Republic of|Mexico|New Zealand|Peru|Poland|Russian Federation|Spain|Taiwan|Ukraine|Vietnam 1
United States|Argentina|Australia|Belgium|Canada|Finland|France|Germany|Hungary|Italy|Spain|Switzerland 1
United States|Argentina|Austria|Belgium|Brazil|Canada|Croatia|Denmark|Greece|Italy|Netherlands|Poland|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
United States|Argentina|Belgium|Brazil|Canada|Colombia|Czechia|France|Germany|Greece|Israel|Korea, Republic of|Mexico|Poland|Portugal|Russian Federation|Spain|Sweden|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Bulgaria|Costa Rica|Ecuador|Estonia|France|Germany|Hungary|India|Italy|Mexico|Panama|Peru|Poland|Romania|Russian Federation|Ukraine|United Kingdom|Uruguay 1
United States|Argentina|Canada|China|Czechia|Germany|Italy|Norway|Poland|Portugal|Sweden|Switzerland|Ukraine|United Kingdom 1
United States|Argentina|Mexico 1
United States|Australia|Austria|Belgium|Brazil|Canada|China|Czechia|France|Germany|Hong Kong|Israel|Italy|Japan|Korea, Republic of|New Zealand|Poland|Russian Federation|Spain|Switzerland|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|France|Germany|Italy|Poland|Spain|Switzerland|United Kingdom 1
United States|Australia|Austria|Belgium|Bulgaria|Canada|Finland|France|Germany|Greece|Hong Kong|Hungary|Ireland|Israel|Italy|Korea, Republic of|New Zealand|Poland|Portugal|Russian Federation|Singapore|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Bulgaria|Canada|France|Germany|Greece|Hungary|India|Israel|Italy|Netherlands|New Zealand|Poland|Serbia|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Croatia|Czechia|Denmark|Finland|France|Hungary|Ireland|Israel|Italy|Korea, Republic of|Netherlands|Norway|Poland|Singapore|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|France|Greece|Hungary|Israel|Italy|Netherlands|New Zealand|Poland|Portugal|Russian Federation|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|France|Israel|Italy|New Zealand|Poland|Russian Federation|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Israel|Italy|Netherlands|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Austria|Belgium|China|France|New Zealand|Poland|Spain|Taiwan 1
United States|Australia|Austria|Belgium|Czechia|France|Germany|Italy|Japan|Netherlands|Singapore|Spain|Switzerland|Taiwan 1
United States|Australia|Austria|Belgium|Czechia|France|Italy|New Zealand|Poland|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|France|Germany|Italy|Japan|Netherlands|Norway|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|France|Germany|Italy|Korea, Republic of|New Zealand|Poland|Spain|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|France|Ireland|Italy|Poland|Spain|United Kingdom 1
United States|Australia|Austria|Canada|Croatia|Czechia|Finland|France|Germany|Hungary|Israel|Italy|Korea, Republic of|New Zealand|Poland|Portugal|Romania|Serbia|Singapore|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Austria|Canada|Czechia|France|Hungary|Italy|Netherlands|Spain 1
United States|Australia|Austria|Canada|Denmark|Finland|France|Italy|Japan|Netherlands|Norway|Spain 1
United States|Australia|Austria|Canada|France|Germany|Italy|Japan|Netherlands|Norway 1
United States|Australia|Austria|Canada|Germany|Netherlands|Poland|Russian Federation|Switzerland|United Kingdom 1
United States|Australia|Austria|Canada|Germany|Poland|Russian Federation|Switzerland|United Kingdom 1
United States|Australia|Austria|Czechia|France|Italy|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Finland|France|Germany|Italy|Spain|Switzerland|United Kingdom 1
United States|Australia|Austria|France|Germany|Hong Kong|Italy|Japan|Netherlands|Norway|Singapore|Spain|Switzerland 1
United States|Australia|Belgium|Brazil|Bulgaria|Canada|Chile|China|Czechia|Denmark|Finland|France|Germany|Greece|Hong Kong|Hungary|Ireland|Israel|Italy|Japan|Korea, Republic of|Mexico|Poland|Portugal|Romania|Russian Federation|Singapore|Slovakia|South Africa|Spain|Taiwan|Thailand|Turkey|Ukraine|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|China|Czechia|Denmark|Finland|France|Germany|Greece|Hungary|India|Italy|Japan|Korea, Republic of|Mexico|Poland|Portugal|Puerto Rico|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|Czechia|Korea, Republic of|Mexico|New Zealand|Poland|Puerto Rico|Russian Federation 1
United States|Australia|Belgium|Brazil|Canada|France|Germany|Israel|Italy|Netherlands|New Zealand|Poland|Russian Federation|Singapore 1
United States|Australia|Belgium|Brazil|France|Germany|Israel|Italy|Malaysia|New Zealand|Singapore|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|China|Czechia|Finland|France|Germany|Hungary|Israel|Italy|Japan|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|China|Czechia|France|Ireland|Israel|Italy|Japan|Korea, Republic of|Netherlands|New Zealand|Poland|Portugal|Puerto Rico|Russian Federation|Spain|Switzerland|Taiwan|Turkey 1
United States|Australia|Belgium|Canada|Czechia|Denmark|Finland|France|Italy|New Zealand|Poland|Spain|Taiwan 1
United States|Australia|Belgium|Canada|Czechia|France|Germany|Greece|Hungary|Italy|Korea, Republic of|Netherlands|Poland|Spain|Turkey|Ukraine|United Kingdom 1
United States|Australia|Belgium|Canada|Czechia|France|Greece|Israel|Italy|New Zealand|Poland|Russian Federation|Spain|Sweden|Turkey 1
United States|Australia|Belgium|Canada|Czechia|France|Italy|Korea, Republic of|Poland|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Hong Kong|Italy|Korea, Republic of|Singapore|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Italy|Netherlands|Singapore|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Italy|Norway|Singapore|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Italy|United Kingdom 1
United States|Australia|Belgium|Canada|France|Italy|Spain 1
United States|Australia|Belgium|Canada|France|Italy|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|Germany|New Zealand|Sweden|Turkey|United Kingdom 1
United States|Australia|Belgium|Canada|Italy|Puerto Rico|Spain|United Kingdom 1
United States|Australia|Belgium|China|Czechia|France|Germany|Italy|Netherlands|New Zealand|Poland|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Belgium|Czechia|Finland|Germany|Israel|Sweden|Switzerland|United Kingdom 1
United States|Australia|Belgium|Denmark|France|Germany|Israel|Italy|Poland|Spain|United Kingdom 1
United States|Australia|Belgium|France|Germany|Hong Kong|Italy|Korea, Republic of|Netherlands|Poland|Spain|Switzerland|United Kingdom 1
United States|Australia|Belgium|France|Germany|Netherlands 1
United States|Australia|Belgium|Italy|Korea, Republic of|Poland|Spain|United Kingdom 1
United States|Australia|Brazil|Canada|Mexico|New Zealand|Peru 1
United States|Australia|Brazil|France|Germany|Israel|Italy|Korea, Republic of|New Zealand|Sweden|United Kingdom 1
United States|Australia|Brazil|India|Mexico|Peru 1
United States|Australia|Canada|Czechia|Denmark|France|Germany|Hungary|Israel|Italy|Korea, Republic of|Poland|Romania|Spain|Taiwan|United Kingdom 1
United States|Australia|Canada|Czechia|Denmark|Germany|Hungary|Israel|Italy|Poland|Spain|Sweden|United Kingdom 1
United States|Australia|Canada|Czechia|France|Germany|Hungary|Italy|Korea, Republic of|Netherlands|Spain|Turkey|United Kingdom 1
United States|Australia|Canada|Czechia|France|Israel|Italy|Poland|Romania|Spain|United Kingdom 1
United States|Australia|Canada|Denmark|France|Germany|Italy|Spain|United Kingdom 1
United States|Australia|Canada|France 1
United States|Australia|Canada|France|Germany|Italy|Korea, Republic of|Netherlands|Spain|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|Poland|Taiwan|Ukraine|United Kingdom 1
United States|Australia|Canada|France|Germany|Korea, Republic of|Spain|United Kingdom 1
United States|Australia|Canada|France|Italy|Korea, Republic of|Poland|Singapore|Spain|Taiwan|United Kingdom 1
United States|Australia|Canada|Germany|Israel|Italy 1
United States|Australia|Canada|Germany|Japan|Netherlands|Spain|Switzerland 1
United States|Australia|Canada|Ireland|New Zealand|Puerto Rico|Switzerland 1
United States|Australia|Canada|Israel 1
United States|Australia|Canada|Israel|New Zealand|Puerto Rico|Switzerland 1
United States|Australia|Canada|Netherlands|New Zealand|Puerto Rico|Switzerland 1
United States|Australia|Canada|Netherlands|Puerto Rico|Switzerland 1
United States|Australia|Canada|New Zealand 1
United States|Australia|Canada|New Zealand|Puerto Rico 1
United States|Australia|Canada|New Zealand|Saudi Arabia 1
United States|Australia|Canada|New Zealand|Switzerland 1
United States|Australia|Canada|Puerto Rico 1
United States|Australia|Chile|Czechia|France|Germany|Hungary|Italy|Korea, Republic of|Mexico|South Africa|Spain|Turkey|United Kingdom 1
United States|Australia|China|Czechia|France|Italy|Korea, Republic of|New Zealand|United Kingdom 1
United States|Australia|Czechia|France|Germany|Italy|Korea, Republic of|Poland|Romania|Russian Federation|Serbia 1
United States|Australia|Czechia|France|Germany|Poland|Spain|Sweden|Ukraine|United Kingdom 1
United States|Australia|Denmark|France|Germany|Italy|Japan|Netherlands|Spain|Switzerland|United Kingdom 1
United States|Australia|Denmark|Spain 1
United States|Australia|France|Germany|Israel|Korea, Republic of|Spain 1
United States|Australia|France|Germany|Italy 1
United States|Australia|France|Germany|Italy|Japan|Spain 1
United States|Australia|France|Germany|Netherlands|Spain 1
United States|Australia|France|Greece|Hong Kong|Poland|Russian Federation|Singapore 1
United States|Australia|France|Italy|Japan 1
United States|Australia|France|Italy|Korea, Republic of|Poland|Russian Federation|Spain|Turkey 1
United States|Australia|France|Poland 1
United States|Australia|Germany 1
United States|Australia|Germany|Korea, Republic of|New Zealand 1
United States|Australia|Israel|Italy|Korea, Republic of|Poland|Slovakia|Spain|United Kingdom 1
United States|Australia|Italy|New Zealand|Spain 1
United States|Australia|Korea, Republic of 1
United States|Australia|Peru|Puerto Rico|South Africa 1
United States|Australia|Puerto Rico 1
United States|Austria|Belarus|Belgium|Brazil|Croatia|France|Georgia|Germany|Greece|India|Italy|Japan|Korea, Republic of|Lebanon|Mexico|Peru|Philippines|Poland|Portugal|Puerto Rico|Romania|Russian Federation|South Africa|Spain|Switzerland|Thailand|Turkey|Ukraine|United Kingdom 1
United States|Austria|Belgium|Brazil|Canada|Chile|China|Colombia|Czechia|Germany|Hungary|India|Israel|Italy|Malaysia|Morocco|Philippines|Poland|Portugal|Romania|Russian Federation|Singapore|South Africa|Spain|Taiwan|Thailand|Tunisia|Turkey|Ukraine 1
United States|Austria|Belgium|Bulgaria|Czechia|Denmark|France|Germany|Hungary|Italy|Poland|Romania|Russian Federation|Slovakia|Spain|Ukraine|United Kingdom 1
United States|Austria|Belgium|Canada|Czechia|France|Germany|Italy|Netherlands|Russian Federation|Spain|Sweden|Switzerland|United Kingdom 1
United States|Austria|Belgium|Colombia|France|Germany|Hungary|Israel|Italy|Puerto Rico|Singapore|Spain|Turkey|United Kingdom 1
United States|Austria|Belgium|Czechia|Germany|Portugal 1
United States|Austria|Canada|Germany 1
United States|Austria|Czech Republic|France|Germany|Lithuania|Romania|Russian Federation|Sweden|Turkey|United Kingdom 1
United States|Austria|Denmark|Estonia|United Kingdom 1
United States|Austria|France|Germany 1
United States|Austria|Germany|Italy|Spain 1
United States|Austria|Korea, Republic of|Spain 1
United States|Belarus|Belgium|Bulgaria|Canada|Czechia|France|Georgia|Hungary|Italy|Spain|United Kingdom 1
United States|Belgium|Brazil|Bulgaria|Canada|Czechia|France|Germany|Hungary|Italy|Korea, Republic of|Netherlands|Poland|Romania|Russian Federation|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Belgium|Brazil|China|Czechia|France|Germany|Israel|Italy|Japan|Poland|Portugal|Puerto Rico|Russian Federation|Spain|Turkey|United Kingdom 1
United States|Belgium|Brazil|France|Peru|United Kingdom 1
United States|Belgium|Bulgaria|Czechia|Hungary|Italy|Poland|Switzerland|Ukraine 1
United States|Belgium|Canada|Croatia|Denmark|France|Germany|Hungary|Israel|Italy|Netherlands|Poland|Russian Federation|Slovakia|South Africa|Spain|United Kingdom 1
United States|Belgium|Canada|Czech Republic|Finland|France|Germany|Greece|Israel|Slovakia|Switzerland|Turkey|United Kingdom 1
United States|Belgium|Canada|Denmark|Korea, Republic of 1
United States|Belgium|Canada|France|Hong Kong|Japan|Korea, Republic of|Singapore|United Kingdom 1
United States|Belgium|Canada|France|Italy 1
United States|Belgium|Canada|France|Italy|Spain|United Kingdom 1
United States|Belgium|Canada|France|Italy|United Kingdom 1
United States|Belgium|Canada|France|United Kingdom 1
United States|Belgium|Canada|Germany|Korea, Republic of 1
United States|Belgium|Canada|United Kingdom 1
United States|Belgium|Czechia|Denmark|France|Germany|Israel|Italy|Poland|Spain|United Kingdom 1
United States|Belgium|Czechia|France|Germany|Hungary|Italy|Poland|Spain|United Kingdom 1
United States|Belgium|Czechia|Israel|Italy|Poland|Spain|Turkey|United Kingdom 1
United States|Belgium|France|Germany|Israel|Italy|Netherlands|Spain|Sweden|United Kingdom 1
United States|Belgium|France|Germany|Italy|Japan|Netherlands|Spain|Sweden|Switzerland|United Kingdom 1
United States|Belgium|France|Germany|Italy|Korea, Republic of|Spain|Turkey 1
United States|Belgium|France|Germany|Spain|Switzerland|United Kingdom 1
United States|Belgium|France|Germany|United Kingdom 1
United States|Belgium|France|Greece|Italy|Poland 1
United States|Belgium|France|Israel|Poland|Puerto Rico|Russian Federation|Spain|United Kingdom 1
United States|Belgium|France|Italy 1
United States|Belgium|France|Italy|Netherlands|Spain 1
United States|Belgium|France|Italy|Spain 1
United States|Belgium|France|Italy|Spain|United Kingdom 1
United States|Belgium|Germany|Hong Kong|Hungary|Japan|Korea, Republic of|Netherlands|Singapore 1
United States|Belgium|Germany|Hungary|Italy|Poland|Spain 1
United States|Belgium|Germany|United Kingdom 1
United States|Belgium|Israel 1
United States|Belgium|United Kingdom 1
United States|Bosnia and Herzegovina|France|Israel|Serbia|United Kingdom 1
United States|Brazil|Canada|Czechia|France|Germany|Hong Kong|Hungary|Israel|Italy|Japan|Russian Federation|Singapore 1
United States|Brazil|Chile 1
United States|Brazil|France|Israel|Italy|Netherlands|Portugal|Singapore|Spain|United Kingdom 1
United States|Brazil|Germany|Japan|Netherlands|Spain|United Kingdom 1
United States|Brazil|Hong Kong|Italy|Japan|Singapore|Taiwan 1
United States|Bulgaria|Czechia|France|Germany|Hungary|Italy|Poland|Romania|Russian Federation|Serbia|Spain|United Kingdom 1
United States|Canada|China|France|Germany|Hong Kong|Italy|Taiwan 1
United States|Canada|China|France|Germany|Japan|Singapore|Switzerland|United Kingdom 1
United States|Canada|Czechia|France|Germany|Hungary|Israel|Poland|Russian Federation|Spain|Turkey 1
United States|Canada|France|Germany|Israel|Netherlands 1
United States|Canada|France|Germany|Italy 1
United States|Canada|France|Germany|Italy|Netherlands 1
United States|Canada|France|Germany|Italy|Spain|United Kingdom 1
United States|Canada|France|Germany|Netherlands|United Kingdom 1
United States|Canada|France|Italy 1
United States|Canada|France|Italy|Poland 1
United States|Canada|France|Italy|Spain 1
United States|Canada|France|Spain 1
United States|Canada|France|United Kingdom 1
United States|Canada|Georgia|Moldova, Republic of|Poland|Spain|Ukraine 1
United States|Canada|Germany 1
United States|Canada|Israel|Japan|Singapore|Spain 1
United States|Canada|Korea, Republic of|Taiwan 1
United States|Canada|Puerto Rico|Switzerland 1
United States|Canada|Singapore 1
United States|Canada|South Africa 1
United States|Canada|Sweden|United Kingdom 1
United States|Canada|Switzerland 1
United States|China 1
United States|China|Italy|Japan|Korea, Republic of|Russian Federation|Taiwan 1
United States|China|Japan|Singapore 1
United States|Colombia|Czechia|Guatemala|Italy|Korea, Republic of|Spain 1
United States|Czechia|Denmark|Hungary|Italy|Spain 1
United States|Czechia|Italy|Japan|Korea, Republic of|Singapore 1
United States|Denmark 1
United States|Denmark|Italy 1
United States|Denmark|United Kingdom 1
United States|Egypt|India 1
United States|Egypt|Singapore 1
United States|Finland|France|Netherlands|Spain 1
United States|France|Germany|Hong Kong|Italy|Korea, Republic of|Netherlands|Taiwan 1
United States|France|Germany|Italy|Japan|Netherlands|United Kingdom 1
United States|France|Germany|Italy|Mexico|Netherlands|Spain|United Kingdom 1
United States|France|Germany|Italy|Poland|United Kingdom 1
United States|France|Germany|Italy|Spain|United Kingdom 1
United States|France|Germany|Italy|United Kingdom 1
United States|France|Germany|Korea, Republic of|Singapore|United Kingdom 1
United States|France|Germany|Netherlands 1
United States|France|Germany|Poland|Russian Federation|United Kingdom 1
United States|France|Germany|Portugal|Spain|United Kingdom 1
United States|France|Germany|Spain 1
United States|France|Hong Kong|Italy|Korea, Republic of|Poland|Russian Federation|Spain|Turkey 1
United States|France|Ireland|United Kingdom 1
United States|France|Israel|Korea, Republic of|United Kingdom 1
United States|France|Italy|Netherlands|Spain|Switzerland 1
United States|France|Netherlands 1
United States|France|Netherlands|United Kingdom 1
United States|France|Switzerland 1
United States|Germany|Ireland|Spain|United Kingdom 1
United States|Germany|Israel|Netherlands 1
United States|Germany|Italy|Spain|United Kingdom 1
United States|Germany|Poland 1
United States|Germany|Poland|United Kingdom 1
United States|Germany|Puerto Rico 1
United States|Germany|Spain 1
United States|Germany|Sweden|United Kingdom 1
United States|India|Israel 1
United States|Israel|Poland|Spain 1
United States|Italy|Korea, Republic of 1
United States|Italy|Korea, Republic of|Poland|Russian Federation 1
United States|Italy|Poland 1
United States|Italy|Russian Federation|Spain 1
United States|Italy|Spain 1
United States|Italy|Switzerland|United Kingdom 1
United States|Italy|United Kingdom 1
United States|Kenya|Uganda 1
United States|Korea, Republic of|Spain 1
United States|Korea, Republic of|Spain|United Kingdom 1
United States|Netherlands|New Zealand|Australia|Canada|Puerto Rico|Switzerland 1
United States|Netherlands|Spain|Ukraine|United Kingdom 1
United States|Poland 1
United States|Poland|Spain|Sweden 1
United States|Puerto Rico|Switzerland 1
United States|Russian Federation 1
United States|Saudi Arabia 1
United States|Spain|United Kingdom 1

Sites per Study

Site_count Study_Count
1 1487
2 229
3 162
4 101
5 106
6 81
7 74
8 41
9 40
10 49
11 65
12 32
13 34
14 24
15 30
16 23
17 29
18 20
19 16
20 19
21 24
22 22
23 20
24 14
25 20
26 9
27 10
28 12
29 3
30 13
31 15
32 8
33 5
34 7
35 7
36 6
37 5
38 7
39 6
40 9
41 7
42 7
43 6
44 6
45 6
46 6
47 7
48 5
49 2
50 2
51 2
52 5
53 4
54 5
55 2
56 3
57 4
59 2
60 1
62 5
63 2
65 2
67 2
68 1
69 1
70 2
71 3
72 2
73 2
75 2
76 3
77 2
78 2
79 2
80 1
81 2
82 1
83 1
84 2
85 2
86 1
87 6
90 1
91 4
92 3
94 2
95 2
96 2
97 2
98 2
99 1
101 1
103 2
104 1
107 2
108 2
109 3
110 1
111 2
112 1
113 3
114 4
115 1
116 1
117 1
119 1
121 1
123 3
126 2
128 1
131 4
134 2
140 1
143 1
144 2
145 1
147 1
150 2
151 1
152 3
153 1
157 1
158 1
159 2
160 2
161 1
162 1
164 1
165 1
167 1
171 1
173 1
175 1
176 2
178 1
180 1
183 1
186 1
190 1
192 1
195 1
199 1
200 1
202 1
203 1
204 1
206 2
209 1
212 1
215 1
216 1
222 1
226 1
227 1
235 1
240 1
241 1
244 1
246 1
250 1
257 1
259 1
261 1
273 1
282 1
319 1
326 1
338 1
393 1
396 1
409 1
418 1
423 2
483 1
510 1
515 1
539 1
544 1
796 1
1328 1

Phase

Phase Study_Count
Phase 2 1341
Phase 1 843
Phase 1/Phase 2 419
Phase 3 275
N/A 158
Phase 4 52
Early Phase 1 33
Phase 2/Phase 3 29

Number of Arms

Number_of_Arms Count_of_Studies
1 1755
2 583
3 149
4 89
5 32
6 25
7 12
8 15
9 6
10 5
11 2
12 2
13 1
14 1
15 2
17 2
37 1
NA 468

Number of Updates

Count of Versions Count of Studies
1 137
2 192
3 162
4 167
5 139
6 135
7 141
8 122
9 118
10 122
11 124
12 117
13 108
14 105
15 92
16 72
17 70
18 64
19 45
20 60
21 41
22 49
23 37
24 36
25 36
26 37
27 29
28 35
29 18
30 27
31 18
32 22
33 19
34 11
35 22
36 20
37 10
38 15
39 10
40 7
41 17
42 17
43 9
44 13
45 6
46 10
47 8
48 8
49 12
50 5
51 6
52 6
53 7
54 3
55 6
56 7
57 3
58 3
59 6
60 7
61 7
62 4
63 2
64 6
65 4
66 10
67 3
68 4
69 5
70 1
71 5
72 7
73 2
74 4
75 4
76 1
78 1
79 3
80 4
81 1
82 2
83 4
84 2
85 3
86 4
87 2
88 4
90 2
91 2
92 1
93 2
94 1
95 2
96 2
97 3
98 2
99 1
103 1
104 2
105 1
106 1
108 1
110 1
113 1
114 3
116 2
117 1
122 1
125 2
126 1
127 2
128 1
129 2
130 1
132 1
134 1
136 1
137 1
140 1
142 1
143 1
144 2
147 1
149 3
150 1
151 1
153 1
154 1
156 1
158 1
159 1
160 2
162 1
169 1
173 1
179 1
182 1
186 1
189 1
194 1
201 1
203 1
204 1
205 1
208 2
213 1
216 1
217 2
219 1
230 1
231 2
232 1
238 1
248 1
270 1
291 2
329 1
414 1
425 1
455 1
515 1
630 1
826 1
870 1
879 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 64605 3013 21.442084
Contacts/Locations 30633 2739 11.184009
Arms 6698 2083 3.215555
Interventions 6698 2083 3.215555
Recruitment Status 5557 2684 2.070417
Study Design 5448 2244 2.427808
Eligibility 5380 2052 2.621832
Study Identification 4906 1957 2.506898
Study Description 4564 1677 2.721526
Outcome Measures 4223 1849 2.283937
Conditions 4000 1439 2.779708
Sponsor/Collaborators 3456 1698 2.035336
None (earliest Version on record) 3150 3150 1.000000
Oversight 2601 1727 1.506080
References 1358 747 1.817938
More Information 1196 381 3.139108
Results 570 570 1.000000
IPDSharing 387 330 1.172727
Baseline Characteristics 247 182 1.357143
Results Submission Events 190 190 1.000000
Reported Adverse Events 158 133 1.187970
Participant Flow 146 125 1.168000
Documents 145 137 1.058394
2020 Study Status 1 1 1.000000
Quality Control Review has not concludedReturned: May 28 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 4.00000 2.0000 1.00000 1.00000 1.00000 9.0000 10.0000 1.0000
1st Qu. 12.00000 25.0000 18.00000 30.00000 30.00000 75.0000 161.5000 50.0000
Median 17.00000 50.0000 33.00000 48.00000 48.00000 120.0000 302.0000 75.0000
Mean 29.78788 124.9026 51.17064 69.22084 72.57524 235.6786 471.2434 141.6667
3rd Qu. 26.00000 102.2500 60.00000 84.00000 80.00000 364.0000 546.5000 159.0000
Max. 312.00000 2200.0000 746.00000 422.00000 6452.00000 1000.0000 9349.0000 650.0000

Trial Group Type

group_type Group_Count
Experimental 3894
NA 468
Active Comparator 406
Other 120
Placebo Comparator 54
No Intervention 40
Sham Comparator 2

Intervention Model

intervention_model Study_Count
Single Group Assignment 2041
Parallel Assignment 698
NA 263
Sequential Assignment 119
Crossover Assignment 19
Factorial Assignment 10

Primary Purpose

primary_purpose Study_Count
Treatment 2939
Supportive Care 88
Prevention 34
Diagnostic 33
Other 21
NA 16
Basic Science 14
Screening 3
Health Services Research 2

Observational Studies

Studies by Country

Country Study_Count
United States 105
NA 30
France 24
Korea, Republic of 21
China 12
Italy 11
Japan 8
United Kingdom 7
Spain 5
Germany 4
Denmark 3
Israel 3
Netherlands 3
Serbia 3
Taiwan 3
Canada 2
Russian Federation 2
Switzerland 2
United States|Australia|Canada|Puerto Rico 2
United States|Canada 2
Argentina|Brazil|Chile|Colombia|Guatemala|Mexico|Panama 1
Austria|Belgium|France|Germany|Greece|Ireland|Italy|Portugal|Spain|Sweden|United Kingdom 1
Austria|Brazil|France|Italy|Portugal|Ukraine 1
Austria|France|Germany|Greece|Italy|Netherlands|Spain 1
Austria|Italy|Netherlands|Spain 1
Belgium 1
Belgium|France|Portugal 1
Brazil 1
Brazil|Italy 1
China|Hong Kong|Taiwan 1
China|Korea, Republic of|Malaysia|Singapore 1
France|Italy 1
Guadeloupe|Martinique 1
India 1
Italy|Spain|Switzerland|United Kingdom 1
Italy|Switzerland 1
Macedonia, The Former Yugoslav Republic of 1
Mexico 1
Sweden 1
Tanzania|Uganda 1
Turkey 1
United States|Argentina|Australia|Brazil|China|Japan|United Kingdom 1
United States|Argentina|Brazil|Chile|China|France|Israel|Italy|Korea, Republic of|Slovakia|Spain|Switzerland|United Kingdom|Uruguay 1
United States|Australia|Canada|Puerto Rico|Switzerland 1
United States|Australia|Canada|Switzerland 1
United States|Canada|Germany 1
United States|Canada|Puerto Rico|Switzerland 1
United States|France|Italy|Spain 1
United States|Germany|Italy|United Kingdom 1
United States|Jamaica|Japan 1
United States|Puerto Rico 1
United States|Spain 1

Sites per Study

Site_count Study_Count
1 184
2 16
3 5
4 7
5 3
6 3
7 3
8 2
9 2
10 3
11 1
12 2
13 1
14 3
15 4
16 2
17 3
20 1
21 1
22 1
23 1
24 1
25 1
27 1
28 1
31 2
33 1
35 1
39 2
40 1
42 1
43 1
48 2
54 1
55 1
56 1
57 1
66 1
68 1
69 1
75 1
76 1
79 1
82 1
83 1
107 1
111 1
130 1
138 1
144 1
183 2
191 1
203 1

Number of Updates

Count of Versions Count of Studies
1 44
2 32
3 33
4 26
5 21
6 7
7 11
8 13
9 7
10 3
11 9
12 2
13 4
14 4
15 5
16 2
17 3
18 3
19 5
20 2
21 4
22 2
24 2
25 1
26 3
28 1
29 1
30 1
34 1
37 1
48 2
53 2
58 1
61 1
71 1
75 1
81 1
82 2
83 2
85 1
88 1
89 2
97 2
109 1
116 1
118 1
122 1
130 1
148 1
149 1
154 1
164 1
165 1
182 1
185 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 4626 240 19.275000
Contacts/Locations 1858 191 9.727749
Study Description 619 99 6.252525
Study Design 381 178 2.140449
Eligibility 308 136 2.264706
Recruitment Status 298 193 1.544042
None (earliest Version on record) 284 284 1.000000
Study Identification 216 113 1.911504
Sponsor/Collaborators 203 130 1.561538
Conditions 186 79 2.354430
Outcome Measures 183 121 1.512397
Groups 175 89 1.966292
Interventions 175 89 1.966292
Oversight 142 109 1.302752
References 91 40 2.275000
IPDSharing 17 17 1.000000
Results 9 9 1.000000
More Information 2 2 1.000000
Results Submission Events 2 2 1.000000
Documents 1 1 1.000000

Enrollment Metrics

Measure Observational
Min 5.00
1st Qu 49.00
Median 135.00
Mean 968.47
3rd Qu 402.50
Max 99999.00

Observation Model

observational_model Study_Count
Cohort 154
Case-Only 45
NA 31
Other 25
Case-Control 13
Case Control 12
Family-Based 2
Case-Crossover 1
Ecologic or Community 1

Time Perspective

time_perspective Study_Count
Prospective 144
Retrospective 100
NA 18
Cross-Sectional 13
Other 9

Registries

Studies by Country

Country Study_Count
China 8
Korea, Republic of 7
France 3
NA 3
United States 3
Belgium|France 1
Brazil 1
Czechia 1
Denmark 1
Italy 1
Malawi 1
Russian Federation 1
Spain 1
Taiwan 1
United States|Italy|Romania|Ukraine 1

Sites per Study

Site_count Study_Count
1 24
2 1
6 1
7 1
8 1
9 2
14 1
24 1
31 1
36 1

Number of Updates

Count of Versions Count of Studies
1 13
2 12
3 2
4 4
5 1
13 1
23 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 65 21 3.095238
None (earliest Version on record) 34 34 1.000000
Contacts/Locations 27 10 2.700000
Recruitment Status 13 9 1.444444
Study Design 9 4 2.250000
References 7 2 3.500000
Outcome Measures 5 3 1.666667
Study Description 5 4 1.250000
Conditions 4 3 1.333333
IPDSharing 4 4 1.000000
Sponsor/Collaborators 4 3 1.333333
Study Identification 4 3 1.333333
Groups 3 3 1.000000
Interventions 3 3 1.000000
Oversight 3 3 1.000000
Documents 2 1 2.000000
Eligibility 2 2 1.000000
More Information 1 1 1.000000
Results 1 1 1.000000
Results Submission Events 1 1 1.000000

Enrollment Metrics

Measure Registries
Min 40.000
1st Qu 200.000
Median 525.000
Mean 2469.618
3rd Qu 1592.750
Max 20000.000

Registry Model

observational_model Study_Count
Cohort 31
Case-Only 3

Time Perspective

time_perspective Study_Count
Prospective 27
Other 5
Cross-Sectional 2

Follow-up

target_duration Study_Count
5 Years 11
10 Years 5
2 Years 5
1 Year 3
20 Years 2
3 Years 2
1 Day 1
13 Years 1
15 Months 1
24 Months 1
36 Months 1
9 Years 1